package org.smart4j.framework.util;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * @author luoyong
 * @date 2018-11-19下午 5:06
 */
public final class PropsUtil {

    private static final Logger LOGGER  = LoggerFactory.getLogger(PropsUtil.class);

    /**
     *  加载属性文件
     * @param fileName 文件名
     * @return properties
     */
    public static Properties loadProps(String fileName){
        Properties props = null;
        InputStream is = null;
        try {
            is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fileName);
            if (is == null){
                throw new FileNotFoundException(fileName+"file not found");
            }
            props = new Properties();
            props.load(is);
        } catch (Exception e) {
            LOGGER.error("load properties file failure",e);
        }finally {
            if (is != null ){
                try {
                    is.close();
                } catch (IOException e) {
                    LOGGER.error("close stream failure",e);
                }
            }
        }
        return props;

    }

    /**
     * 获取字符属性
     * @param props properties
     * @param key key
     * @return String
     */
    public static String getString(Properties props,String key){
        return getString(props,key,"");
    }

    public static String getString(Properties props,String key,String defaultValue){
        String value = defaultValue;
        if (props.containsKey(key)){
            value = props.getProperty(key);
        }
        return value;
    }

    public static int getInt(Properties props ,String key){

        return getInt(props,key,0);
    }

    public static int getInt(Properties props,String key,int defaultValue){
        int value = defaultValue;
        if (props.containsKey(key)){
            value = Integer.parseInt(props.getProperty(key));
        }
        return value;
    }

    public static boolean getBoolean(Properties props,String key){
        return getBoolean(props,key,false);
    }

    public static boolean getBoolean(Properties props ,String key,Boolean defaultValue){
        boolean value = defaultValue;
        if (props.containsKey(key)){
            value = Boolean.parseBoolean(props.getProperty(key));
        }
        return value;
    }


}
